glance "over" the project: a preposition or an adverb?

[sitifan]

1. He glanced over the wall. (preposition)
2. He glanced over the project. (adverb)
Source: Ting-chi Tang, Essays on English Grammar and Rhetoric, page 80.

In #2, is the word "over" really an adverb?

 

[5jj]

No.

 

[Tarheel]

I would say the person glanced AT the wall or LOOKED over the project.

 

[5jj]

If he looked over the project, he spent more time on it than if he merely glanced over it.